System and method of identifying and sorting international mail pieces based on applied-postage adequacy in order to enhance postal service revenue protection

ABSTRACT

Provided is a method of reducing postal revenue losses associated with the processing and delivery of international mail pieces. Algorithmically-resolved image data associated with a mail piece is compared to international-mail-services postage data and a determination is rendered, based on the comparison, as to whether any postage indicated as paid is sufficient to further process the mail piece in accordance with the level of delivery service requested. In various aspects, an attempt to algorithmically ascertain the identity of the sender is undertaken for purposes of automated charge assessment relative to a mail piece for which it is determined that insufficient postage has been tendered. In accordance with alternative aspects, if the sender identity cannot be ascertained, the mail piece is variously (i) rejected for manual handling or (ii) routed for automated sortation and delivery in accordance with a “downgraded” delivery service level for which the amount paid is adequate.

PROVISIONAL PRIORITY CLAIM

Priority based on Provisional Application Ser. No. 60/493,668, filedAug. 8, 2003, and entitled “SYSTEM AND METHOD OF IDENTIFYING AND SORTINGINTERNATIONAL MAIL PIECES BASED ON APPLIED-POSTAGE ADEQUACY IN ORDER TOENHANCE POSTAL SERVICE REVENUE PROTECTION,” is claimed.

BACKGROUND

An international mail piece originating in the United States isdeposited with the United States Postal Service at, for example, a localpost office branch from which it is then routed to an appropriate one ofa plurality of outgoing international mail centers, each of which mailcenters services a specified geographic region or “zone” of the UnitedStates for purposes of handling both outgoing and incoming internationalmail. There exist approximately 13 zones in the United States and eachis serviced by an international mail center that is generally located ator near one of the major U.S. international airports. For instance,there is an international mail center located at or near each of JFKairport in New York, LAX airport in Los Angeles and O'Hare Internationalairport in Chicago.

Although an international mail piece could be deposited directly at anoutgoing international mail center, it is typically received into thesystem at a local post office branch. Mail received into the postalsystem at a local branch office is eventually transported to acentralized postal hub. There are in excess of 250 postal hubs in theUnited States. These “hubs” are known by alternative names including (i)processing and distribution centers, (ii) general mail facilities and(iii) mail distribution centers. Postal hubs are regional mail centersthat handle incoming and outgoing mail for individual post officebranches within a particular range of ZIP Codes. Typically, a postal hubservices one or more “three-digit ZIP Code areas.” For example, theCentral Massachusetts Processing and Distribution Center (also known asthe “Worcester Facility”) services the local post office branchessituated in all the ZIP Codes beginning with “014”, “015,” “016,” and“017.” That is, mail destined for or departing from a local branchoffice within a ZIP Code beginning with any one of the four sets ofthree digits in the previous sentence will, under normal circumstances,pass through the Worcester facility. The Worcester facility servicesmore than two dozen towns, each with its own local branch office.Nationally, the 250 plus hubs collectively service approximately fivethousand individual postal branch offices.

Domestic mail coming into and going out of the various local branchoffices in a particular geographic region is processed through one ormore hubs before delivery to its final domestic destination. Mail piecesidentified as international mail pieces are transported from a regionalhub to an international mail center such as the mail centers describedabove. Each international mail center services a plurality of regionalhubs.

International mail arriving at a regional hub or an international mailcenter is currently randomly sampled to ascertain whether senders areapplying the required postage. As part of the random sampling process,heavy reliance is placed on manual handling and visual inspection byhuman personnel. One basis upon which random sampling may be conductedis when it comes to the attention of postal personnel that a singlesender, such as corporation, is sending large quantities of overseasmail. If it is determined that the sender has applied inadequate postageon some predetermined threshold quantity of mail pieces, personnelremove the sender's mail pieces from automated sortation apparatus andquantify the total amount of the postage deficiency for all of theidentified mail pieces in order to render postal charge assessment tothe sender.

It will be appreciated that, although the measures described aboveidentify and render charge assessment against some senders that underpayfor postage, a large percentage of underpaid mail pieces go undetectedand are transported and delivered at a loss to the postal system. Thecost of human labor renders prohibitive reliance upon human inspectionto detect a large percentage of underpaid mail pieces. Analogousprocesses and similar losses are implemented and incurred by the postalsystems of countries other than the United States.

Accordingly, there exists a need for an enhanced, automated method ofidentifying and sorting international mail pieces that bases automatedsorting decisions at least in part on a machine-executed algorithmicdetermination of the adequacy of applied postage and that, consequently,reduces reliance on costly human labor and error.

SUMMARY

Various implementations of the invention are concerned with automatedmethods of properly identifying international mail pieces for whichadequate postage has not been paid based on predetermined criteria and,furthermore, to sort international mail pieces to designated collectionpoints in accordance with a pre-established protocol including a set ofsortation rules as part of an automated sortation process. Adapting andemploying automated mail sortation apparatus to identify and sortinternational mail according to the adequacy of applied postagesubstantially reduces manual handling and the cost and potential forerrors associated therewith, as well as the loss of revenue associatedwith the delivery of underpaid or unpaid international mail pieces.Illustrative examples of criterion factored into a determination ofapplied-postage adequacy include (i) international destination, (ii)mail-piece type (e.g., letter, flat or package), (iii) mail pieceweight, and (iv) service-type requested (e.g., regular, first class,second, third class, fourth class, priority, express, certified, and/orrecipient signature required). The term “service-type” is, for purposesof various implementations described in the specification and claimed,regarded as interchangeable with “level of service,” “level of deliveryservice” and other variations thereof. The term “internationaldestination” as used throughout the specification and claims indicatesgovernmental and other entities to which a set of distinctive postalrates applies and may include, for example, territories and possessions.In addition, “international destination” may also refer to a region of alarge country, such as the United States, that includes multiple “zones”that are regarded as separate international destinations, for example.For instance, relative to a mail piece originating in London, the zoneof the United States serviced by the international mail processingfacility associated with Chicago's O'Hare International Airport isregarded as a different “international destination” than the zone of theUnited States serviced by the international mail processing facilityassociated with New York's JFK airport.

As is more fully explained further in this specification, variousimplementations disparately treat different types of international mailpieces depending on a predetermined potential for revenue lossassociated with a particular mail piece type. For instance, in oneimplementation, less intensive automated address interpretationresources are allocated for ascertaining the identity of a sender of aletter bearing inadequate postage than the sender of a package bearinginadequate postage because, from a statistical standpoint, a greaterloss of revenue is likely to be associated with the latter. Such animplementation executes a preconceived assessment that, in a realm offinite resources, it is statistically more cost effective to forego apostage shortfall of perhaps several cents associated with a letter thana shortfall of perhaps several dollars associated with a package, forexample.

In order for automated interpretation apparatus to determine whetheradequate postage has been tendered for delivery of an international mailpiece and how the mail is to be routed for delivery, informationexhibited on at least one surface of the mail piece is conveyed toautomated interpretation apparatus through mail-piece data acquisitionapparatus. The data acquisition apparatus may include, for example, oneor more cameras or optical character recognition (OCR) scanners.Although data may be acquired from a mail piece by alternative methods,the act of mail-piece data acquisition is principally expressedthroughout the specification and claims in terms of “image capturing” or“image acquisition.” Therefore, it is intended that “image capturing”and “image acquisition,” and semantic variations thereof, be interpretedsufficiently broadly to include alternative methods of automated dataacquisition such as photography and scanning. Accordingly, variousimplementations include capturing or acquiring at least one image of asurface of the mail piece and storing the at least one image in computermemory. Depending on whether it is desired to preserve the capacity tore-associate the at least one image with the physical mail piece tofacilitate future handling, alternative aspects include the steps ofmarking the physical mail piece with a unique identification markrepresenting its identity and storing a computer memory record of theidentification mark in association with the at least one stored imageacquired from a surface of the mail piece.

The at least one captured image acquired from the mail piece is resolvedby interpretation algorithms to produce a resolved data set associatedwith the corresponding physical mail piece and is indicative of at leastthe nation for which the mail piece is destined as indicated in thedestination address field, whether any postage-paid indication isexhibited on the mail piece and, in various implementations, the amountof postage actually paid by the sender. The resolved data set may alsoinclude indications as to the service-type (e.g., mail class, priority,express, etc.) and, perhaps, weight exhibited on the mail piece.

In various implementations, weight of an international mail piece is animportant factor is determining whether a sender of the mail piece hasapplied adequate postage. As previously indicated, a textual indicationas to the weight of a mail piece may appear on the surface of a mailpiece. However, such indications are not regarded as standard practiceand to rely on a stated indication of weight, even in the relativelyrare instances in which one may appear, presents the potential for lostrevenue due to mistakes or intentional understatements of weight bysenders. Accordingly, various embodiments include an in-line scale amongthe automated sortation machinery for weighing mail pieces. In someversions, a machine-registered weight indication is associated with theresolved data set corresponding to a physical mail piece. Alternativeversions facilitate manual data entry of a mail-piece weight by, forexample, a postal employee and the association of that inputted datawith the data set associated with the corresponding physical mail piece.

Mail-piece dimensions are, in various implementations, yet an additionalfactor that is associated with a resolved data set and accounted for inthe determination as to whether adequate postage has been paid for thedelivery of an international mail piece corresponding thereto.Mail-piece-dimension data is rendered, for instance, by at least one of(i) manual data entry by a postal employee, (ii) the data output ofmail-piece-dimension sensing apparatus, (iii) and an indicationexhibited on the mail piece and having resolved image data correspondingthereto. Mail-piece dimension sensing apparatus are known to thosepossessing ordinary skill in the automated postal processing art and, invarious extant devices, include optical sensors relying on emittedsignals reflected off a mail piece and into one or more signalreceivers. As is known, it is possible to derive dimensional data fromone or more captured images as well. Typically, for a mail pieceexhibiting three substantial dimensions (e.g., a box or mailing tube asopposed to a flat or letter), at least two captured images from at leasttwo different angles are required in order to render calculateddimensional data.

Various implementations include the maintenance of machine-accessibleinternational-mail-services postage data relating required-postage ratesto various predetermined mail-piece characteristics selected from a setof mail-piece characteristics including (i) international destination,(ii) mail-piece type (e.g., letter, flat or package), (iii) mail pieceweight, (iv) mail-piece dimensions, and (v) service-type requested(e.g., mail class including, for instance, priority, express,registered, certified, insured and signature-request services etc.). Invarious embodiments, this information is maintained in aninternational-postage-rate database that includes one or more tarifftables. A sortation protocol includes a set of revenue-protection rulesincluding subsets of conditions indicative as to where a mail piececorresponding to a resolved data set is to be routed by automatedsorting machinery based on the satisfaction, by the resolved data set,of at least one subset of conditions. Of primary importance, in variousaspects, is a comparison between the amount of postage actually paid, asindicated by the resolved data set, and the amount of postage requiredfor the mail piece as indicated by the maintainedinternational-mail-services postage data.

The international-mail-services postage data is consulted and theresolved data set is compared to the international-mail-services postagedata in accordance with the sortation protocol in order to ascertainwhether one or more subsets of conditions is satisfied by the resolveddata set. Based on the satisfaction of one or more condition subsets, aresultant sortation signal set corresponding to sortation and routing ofthe associated physical mail piece to a designated mail piece collectionpoint is generated and rendered accessible to predetermined,signal-responsive automated sorting machinery. In various aspects, adetermination is rendered, based on the comparison between the resolveddata set associated with the mail piece and theinternational-mail-services postage data, as to whether any postageindicated as paid by data within the resolved data set is sufficient tofurther process the mail piece in accordance with the level of deliveryservice requested.

The sortation decisions particular to a specific implementation can varyfrom those of alternative implementations. An illustrativeimplementation sorts mail pieces to collection point types, or“selections,” selected from among a set of four potential selectiontypes, by way of non-limiting example. For instance, an internationalmail piece for which the corresponding resolved data set indicates thatat least the required amount of postage has been paid is routed to acollection point for mail pieces to be “sent as requested.” Also routedto a “send-as-requested”-type collection point, in some implementations,are mail pieces to which a predetermined minimum of postage required forthe international destination has been applied, regardless of at leastone of the actual weight and dimensions of the mail piece. This may bedone if, for example, if either of the weight and dimensioncharacteristics of the mail piece is unavailable. For example, a letter,as opposed to a flat or package, bearing the required minimum postagefor the lowest weight category (e.g., up to 1.0 ounce) for theinternational destination may be sent as requested regardless of theactual weight of the letter. Such an implementation executes a judgmentthat, on average, underpayment of postage on letters does not representas great a source of revenue loss as underpayment of postage on packagesor flats and that it is, therefore, not cost effective to allocateresources for the collection of letter postage shortfalls. A“send-as-requested” collection point receives mail pieces for which thepostage actually applied, though less than the postage actuallyrequired, is inadequate by an amount within a predetermined “inadequacythreshold,” which is alternatively referred to as a “deficiencythreshold.” For instance, consider a package bound for Japan for whichthe postage required is $35.00. If the amount of postage actuallyapplied by the sender is $34.50, and the particular version tolerates aninadequacy of up to 3% (i.e., $1.05), for example, a decision isrendered to route the package for delivery as if full postage had beenpaid. Such tolerance within an inadequacy threshold balances the needsof the postal system to collect revenue and obviate inordinate amountsof handling to collect a relatively small sum of money with the needs ofcustomers to avoid draconian consequences (i.e., refused delivery) forpostage shortfalls that are deemed, as defined by the inadequacythreshold, insignificant or even unintentional. A fourth category ofmail pieces collected at a send-as-requested collection point includesmail pieces exhibiting a meter number, or other information, to whichthe identity of a corresponding postal customer can be matched forpurposes of automated charge assessment for “postage balances due”and/or a surcharge for additional handling and as a deterrent to futurepostage deficiencies.

At a second selection type, mail pieces for which the postage actuallyapplied is inadequate for the service requested are collected fortransport and delivery in accordance with a level of service for whichthe postage actually applied is adequate. For example, if a customerplaces contents in a “global express” package for which the requiredpostage is $25.00 and affixes only $15.00 in postage, the package isrouted for delivery in accordance with the “best level” of deliveryservice for which $15.00 is sufficient (e.g., “global priority”requiring $12.50) or some other “lesser” level of service.

A third collection point type collects mail pieces for which at leastthe presence of a return address has been verified and the mail piecesso collected are returned to the corresponding senders for lack ofadequate postage.

The illustrative implementation includes a fourth selection typedesignated for “rejected” mail pieces that do not meet the criteria forautomated sortation to any of the other implemented collection points.Such mail pieces may be manually handled and, for instance, sent bylowest cost method to the destination address indicated (e.g., shipinstead of aircraft). Alternatively, such mail pieces may be manuallyexamined for exhibited information that reveals the identity of thesender for purposes of postal charge assessment or return to the sender.

Representative implementations are more completely described anddepicted in the following detailed description and the accompanyingdrawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A, 1B, 1C and 1D depict four illustrative international mailpieces;

FIG. 2 is a schematic block diagram of an outgoing-mail center andarchitecture accessible to at least one outgoing mail center for themovement of an international mail piece and postal charge assessmentassociated therewith;

FIG. 3 is an illustrative portion of an international-postage-ratedatabase;

FIG. 4. shows an illustrative portion of a sortation protocol fileincluding condition sets and condition subsets, the satisfaction of anyof which by a resolved data set associated with a mail piece correspondsto the generation of a set of sortation instructions directing thecorresponding mail piece to a predetermined collection point; and

FIG. 5 is of an illustrative in a postage-meter account database.

DETAILED DESCRIPTION

The following description of international mail sortation processes andarchitecture, and various implementations thereof, is demonstrative innature and is not intended to limit the invention or its application ofuses. For purposes of explanation, consideration is given to themovement and sortation of four illustrative international mail pieces.

Referring to FIGS. 1A through 1D and 2, the international mail pieces20, individually designated as 20A, 20B, 20C and 20D, are received intoa postal system and processed through at least one outgoing-mail center100. As described previously in the background, an international mailpiece 20 is typically processed through more than one mail center 100,one of which is an international mail center. In reading the followingdescription, it is to be understood that different processing operationsor functions, such as those depicted in FIG. 2, may occur at differentmail centers 100 relative to any particular mail piece 20. For example,an international mail piece 20 may be weighed, measured and digitallyphotographed at a regional, non-international mail center 100 and notfinally sorted to a collection point until it is at anoutgoing-international-mail center 100. Accordingly, it is to beunderstood that the reference in FIG. 2 to “outgoing mail center 100” isgeneric and should therefore not be interpreted as necessarily limitingthe operations, functions and processes described to a single processingfacility.

Each international mail piece 20 includes a surface 22 having a deliveryaddress field 24 including an international destination 26. Theremainder of an address field 24 includes more specific information thatis required by the foreign incoming-international-mail center (notshown) in order to further route the mail piece 20 through a localdelivery branch office to an addressee and may include street, building,apartment or house number, addressee information and a postal code. Themail pieces 20A, 20B, 20C and 20D are identifiable as international mailpieces 20 and variably exhibit on their surfaces 22 a postage-paidindicium 30, a service-type request 34 and a return address 36. In thecase of metered mail, the postage-paid indicium 30 typically includes aunique meter number associated with the sender of the mail piece 20, asshown in FIGS. 1B and 1D. The unique meter number provides data useableby interpretation algorithms in positively identifying a sender so thatthe mail piece 20, if underpaid, can be returned or, in variousembodiments, to whom charges for postage deficiencies can beautomatically charged without return of the physical mail piece 20. Theservice-type request 34 may assume various alternative forms including,for example, indicia pre-printed for the postal service and imprinted onmail piece envelopes, boxes, tubes or jackets or labels to be applied tomail pieces by senders. Familiar examples of such indicia for UnitedStates domestic mail include Express Mail labels and envelopes, prioritymail envelopes and labels and certified mail labels that include anumber and bar code. A United States domestic Express Mail label, forinstance, includes a unique tracking number and bar code identifying themail piece to which it is applied as Express Mail. Analogous indiciaexist for international mail services. A letter in a plain envelopeaddressed to a foreign country is accorded a level of service analogousto first class mail in the United States.

FIG. 2 is a function-block diagram of the architecture at, andaccessible to, the illustrative outgoing-mail center 100. Theoutgoing-mail center 100 includes access to a data processing system110, which may be at least partially located outside of theoutgoing-mail center 100. The data processing system 110 includes acentral processing unit (CPU) 112 that is communicatively linked to amemory 120, image acquisition apparatus 130, a printer 132, a mail-piecescale 134 and an identification-mark reader 136. The system architecturefurther includes automated sorting machinery 140 responsive tocomputer-generated sortation signals.

At the outgoing-mail center 100 of FIG. 2, an international mail piece20 is deposited on a conveyor 155, where it is conveyed passed the imageacquisition apparatus 130. The image acquisition apparatus 130 scans andcaptures at least one image 22′ of the surface 22 of the physical mailpiece 20 and stores each captured image 22′ as a two-dimensional bitplane of pixels, for example, in memory 120. A unique identificationmark 60 is associated with the captured image(s) 22′ and a computermemory record 60′ of the unique identification mark 60 is stored inconjunction therewith in an image data block 65 corresponding to thephysical mail piece 20. Typically, the identification mark 60 comprisesa bar code, for example. A printer 132 prints the unique identificationmark 60 on the physical mail piece 20. The unique identification mark 60allows the corresponding captured image(s) 22′ to be accessed and, whennecessary, re-associated with the corresponding physical mail piece 20.The captured image(s) 22′ include image data representative of thedestination address field 24 and other, aforementioned informationexhibited on the physical mail piece 20, for example. In addition to theacquisition of image data from a mail piece 20, weight data is acquiredby the mail-piece scale 134 for each mail piece 20 of a selected set ofmail pieces 20 and is associated in memory 120 with the computer memoryrecord 60′ of the unique identification mark 60 corresponding to thephysical mail piece 20. As indicated in the summary, mail-piece-weightdata may be provided and associated with other data corresponding to thephysical mail piece 20 by apparatus and methods other than a mail-piecescale 134. For example, mail-piece-weight data may be manually enteredby a postal employee through a computer terminal 138 or and indicationof weight may be provided on the mail piece 20. It is to be understoodthat none of these methods of acquiring mail-piece-weight data isexclusive and that two or more methods may be implemented in theprocessing of a single mail piece 20.

As explained in the summary, various implementations factor mail-piecedimensions into the determination as to whether adequate postage hasbeen paid for the delivery of an international mail piece correspondingthereto. As with mail-piece-weight data, mail-piece-dimension data isrendered, for instance, by at least one of (i) manual data entry by apostal employee through a computer terminal 138, (ii) the data output ofmail-piece-dimension sensing apparatus 135, (iii) and an indicationexhibited on the mail piece and having resolved image data correspondingthereto and included in the resolved data set 70.

While the international mail piece 20 to which a set of stored images22′ and weight and dimension data, if applicable, corresponds is stillat an outgoing-mail center 100, or in transit between two outgoing mailcenters 100, interpretation algorithms 170 resolve (or interpret) atleast enough image data to ascertain the international destination forwhich the mail piece 20 is destined and to generate sortation signalsfor the sorting machinery 140 to route the mail piece 20 to anappropriate collection point for loading onto a transport vehicle at theoutgoing-mail center 100. As image data is resolved, a resolved data set70 is formed and associated with the computer memory record 60′ of theunique identification mark 60.

In various implementations, an international-postage-rate database 160is provided for maintaining international-mail-services postage dataaccessible to the outgoing-mail center 100. Theinternational-postage-rate database 160 contains data relatingrequired-postage rates to various predetermined international mail-piececharacteristics selected from a set of mail-piece characteristicsincluding, for example, (i) international destination, (ii) mail-piecetype (e.g., letter, flat or package), (iii) mail-piece weight, (iv) mailpiece dimensions and (v) service-type requested (e.g., mail classincluding, for instance, priority or express services). FIG. 3 shows aportion of the data that appears in an illustrativeinternational-postage-rate database 160. The maintenance of aninternational-postage-rate database 160 containing data accessible tointerpretation algorithms 170 and automated sorting machinery 140 at theoutgoing-mail center 100 facilitates the accurate sortation ofinternational mail pieces 20 based on the adequacy of applied postage.

In addition to the maintenance of a international-postage-rate database160, a sortation protocol 180 provides a basis for instructing automatedsortation apparatus (e.g., automated sorting machinery 140) as to how aparticular international mail piece 20 is to be sorted based onconsultation with the international-postage-rate database 160 andcomparison of data therein with a resolved data set 70 associated withthe mail piece 20. Referring to FIGS. 4 and 2, an illustrative sortationprotocol 180 includes a first condition set 182 including conditionsubsets 183, a second condition set 184 including condition subsets 185and a third condition set 186 including condition subsets 187. Theillustrative sortation protocol 180 is structured such that the firstcondition set 182 corresponds to sortation of the corresponding mailpiece 20 to an “as-requested” collection point 192 at the outgoing-mailcenter 100 from which it will be transported to the foreignincoming-international-mail center for delivery as requested. Conditionsubsets 183 within the first condition set 182 are constructed such thatthe satisfaction of even a single condition subset 183 within theillustrative protocol 180 corresponds to automated sortation of a mailpiece 20 whose resolved data set 70 satisfies the condition subset 183to an appropriate as-requested collection point 192.

The illustrative second condition set 184 corresponds to sortation to a“downgrade” collection point 194 to which mail pieces 20 lacking postagesufficient for delivery as requested are sent for delivery in accordancewith a lesser service level for which the applied postage is adequate.Satisfaction of a condition subset 185 within the second condition set184 by the resolved data set 70 associated with a mail piece 20 resultsin the generation of sortation signals indicating that the automatedsorting machinery 140 direct the mail piece 20 to a downgrade collectionpoint 194.

The third condition set 186 of the illustrative sortation protocol 180corresponds to sortation of mail pieces 20 to a “return-to-sender”collection point 196 based on the satisfaction by the resolved data set70 associated with a mail piece 20 of a condition subset 187 within thesecond condition set 186.

It will be appreciated that the illustrative condition subsets 183, 185and 187 of condition sets 182, 184 and 186 depicted in FIG. 4 representa limited, demonstrative and non-limiting selection of numerous possiblecondition subsets 183, 185, and 187.

Referring to FIGS. 2 and 5, various implementations facilitate automatedpostal charge assessment for postage deficiencies to postal accountsidentifiable through automated data-set resolution. One manner in whicha postal account associated with a sender can be identified is throughresolution of a meter number from a mail piece 20. Moreover, there existpostal customer accounts corresponding to customers other than thoseassociated with metered-mail accounts through which a sender may byidentifiable. Accordingly, various implementations include access byinterpretation algorithms 170 to a postal-customer account database 175which, in various aspects, is a machine-consultable repository formaintaining postal-customer account data uniquely relating the identityof each postal customer of a selected set of postal customers with dataindicative of at least one of (i) a mailing address, (ii) a postalservices account number and (iii) a postal meter number. FIG. 5 showsseveral entries in an illustrative postal-customer account database 175.The postal-customer account database 175 includes a postal customeraccount number, a customer name and a mailing address associated witheach postage meter number. The postal-customer account database 175 ofthe illustrative implementation also includes an indication as towhether the customer's account is enabled for automated billing ofpostage deficiencies wherein “1” corresponds to enabled and “0”corresponds to non-enabled. As to metered mail pieces 20 lackingsufficient postage, for example, if a meter number is decipherable byinterpretation algorithms 170, and the sender's account is enabled forautomated charge assessment, the sender and the postal service arespared the consequences of returning the mail piece 20 to the sender andthe postal service collects the appropriate postage for its services. Inone alternative implementation, a surcharge is assessed for automatedpostage-deficiency charge assessment.

In order to further facilitate understanding of the implementation andaspects depicted in FIGS. 2 through 5, reference is made to theinternational mail pieces 20 depicted in FIGS. 1A through 1D, and abrief explanation is provided as to how each of the four mail pieces20A, B, C and D would be processed in the outgoing-mail center 100. Forsimplicity of explanation, all four mail pieces 20A, B, C and D arebound for Paris, France. Moreover, it is assumed that a completeresolved data set 70 corresponding to each of the four mail pieces 20A,B, C and D is available to, and resolvable by, interpretation algorithms170.

Mail piece 20A is a package weighing 1.6 lbs. to which $47.00 in postagehas been applied with a request for “Global Express Guaranteed” deliveryservice. The resolved data set 70 corresponding to mail piece 20A iscompared to data included in the international-postage-rate database 160in accordance with the sortation protocol 180. Referring to FIG. 3, theillustrative international-postage-rate database 160 indicates that, fora package bound for France, $47.00 in postage is required for GlobalExpress Guaranteed Service if the package weighs between one and twopounds. Accordingly, mail piece 20A satisfies condition subset 183A ofthe sortation protocol 180 and is routed by automated sorting machinery140 to collection point 192 for delivery as requested.

Mail piece 20B is a metered letter to which 50 cents postage has beenapplied. The international-postage-rate database 160 of FIG. 3 indicatesthat no less than 60 cents is ever sufficient for a letter bound forFrance. Accordingly, the applied postage is deficient and automatedsorting machinery 140 requires an instruction as to how to route themail piece 20B. Mail piece 20B includes a return address that does notdirectly identify the sender. However, it also includes a meter number(i.e., No. 6756172). Accordingly, the postal-customer account database175 (FIG. 5) is consulted to ascertain the identity and return addressof the postal customer to whom meter number 6756172 was assigned andwhether the account is enabled for automated charge assessment.Referring to FIG. 5, meter number 6756172 is associated with GeorgetownUniversity Hospital and the account is not enabled for automated chargeassessment. Accordingly, a set of instructions directing the mail piece20B to a return-to-sender collection point 194 is generated.

Mail piece 20C is a stamped, non-metered letter bearing postage in theamount of 37 cents, an amount previously demonstrated as insufficient ona letter bound for France. There is no meter number, so thepostal-customer account database 175 is not consulted. However, there isa complete return address. Accordingly, a set of instructions directingthe mail piece 20C to a return-to-sender collection point 194 isgenerated and rendered accessible to the automated sorting machinery140.

Mail piece 20D is similar to mail piece 20B in that it is a meteredletter to which insufficient postage—in this case 55 cents—has beenapplied. Accordingly, the postal-customer account database 175 isconsulted to ascertain the identity of the sender associated with meternumber 6689423. Referring to FIG. 5, meter number 6689423 is associatedwith the Beacon Hill Co. and a full mailing address appears in therecord. Moreover, unlike the account associated with mail piece 20B, theaccount associated with meter number 6689423 is enabled for automatedcharge assessment. Accordingly, the deficiency of 23 cents is assessedto the account and mail piece 20D is routed for delivery as requested.

The foregoing is considered to be illustrative of the principles of theinvention. Furthermore, since modifications and changes will occur tothose skilled in the art without departing from the scope and spirit ofthe invention, it is to be understood that the foregoing does not limitthe invention as expressed in the appended claims to the exactconstruction, implementations and versions shown and described.

1. A method of sorting, in accordance with a predetermined set ofcriteria, an international mail piece exhibiting at least a destinationaddress field and an indication as to a level of delivery servicerequested, the method comprising the steps of: capturing at least oneimage from a surface of the mail piece and storing the at least oneimage in computer memory, the at least one image including at least adestination address field image corresponding to the destination addressfield on the mail piece; maintaining international-mail-services postagedata relating required postage rates to data indicative of at least onepredetermined mail-piece characteristic selected from a set ofmail-piece characteristics including (i) international destination, (ii)mail-piece type, (iii) mail-piece weight, (iv) mail-piece dimensions and(v) service-type requested; resolving the at least one captured imageassociated with the mail piece to produce a resolved data set associatedwith the mail piece and indicative of at least one of (i) the identityof any international destination indicated in the destination addressfield, (ii) whether any postage amount was paid, (iii) the amount of anypostage paid, (iv) the mail-piece type and (v) the service-typerequested; consulting the international-mail-services postage data andcomparing the resolved data set to the international-mail-servicespostage data; and rendering a determination, based on the comparisonbetween the resolved data set associated with the mail piece and theinternational-mail-services postage data, as to whether any postageindicated as paid by data within the resolved data set is sufficient tofurther process the mail piece in accordance with the level of deliveryservice requested.
 2. The method of claim 1 further comprising the stepsof: maintaining postal-customer account data uniquely relating theidentity of each postal customer of a selected set of postal customerswith data indicative of at least one of (i) a mailing address, (ii) apostal services account number, and (iii) a postal meter number; as to amail piece relative to which it is determined, based on the comparisonbetween the resolved data set associated with the mail piece and theinternational-mail-services postage data, that any postage indicated aspaid is insufficient to further process the mail piece in accordancewith the level of delivery service requested, consulting thepostal-customer account data and comparing the resolved data setassociated with the mail piece to the postal-customer-account data inorder to determine, through cross-referencing, whether one of a uniquepostal customer account and a unique postal meter account isidentifiable for purposes of automated charge assessment; and if one ofa unique postal customer account and a unique postal meter account isidentified, automatically assessing a postal charge to the identifiedaccount.
 3. The method of claim 2 wherein the assessed postal chargeincludes at least one of (i) a charge representing the amount of thedeficiency between the amount indicated as paid and the amount ofpostage required for the level of delivery service requested and (ii) asurcharge exacted for the deficiency.
 4. The method of claim 1 whereinthe method further comprises associating data indicative of at least oneof the mail-piece weight and the mail-piece dimensions with the resolveddata set associated with the mail piece, and wherein (a)mail-piece-weight data is rendered by at least one of (i) manual dataentry by a postal employee, (ii) the output of a mail-piece scale, (iii)and an indication exhibited on the mail piece and having resolved imagedata corresponding thereto; and (b) mail-piece-dimension data isrendered by at least one of (i) manual data entry by a postal employee,(ii) the output of mail-piece-dimension sensing apparatus, (iii) and anindication exhibited on the mail piece and having resolved image datacorresponding thereto.
 5. The method of claim 4 further comprising thesteps of: maintaining postal-customer account data uniquely relating theidentity of each postal customer of a selected set of postal customerswith data indicative of at least one of (i) a mailing address, (ii) apostal services account number, and (iii) a postal meter number; as to amail piece relative to which it is determined, based on the comparisonbetween the resolved data set associated with the mail piece and theinternational-mail-services postage data, that any postage indicated aspaid is insufficient to further process the mail piece in accordancewith the level of delivery service requested, consulting thepostal-customer account data and comparing the resolved data setassociated with the mail piece to the postal-customer-account data inorder to determine, through cross-referencing, whether one of a uniquepostal customer account and a unique postal meter account isidentifiable for purposes of automated charge assessment; and if one ofa unique postal customer account and a unique postal meter account isidentified, automatically assessing a postal charge to the identifiedaccount.
 6. The method of claim 5 wherein the assessed postal chargeincludes at least one of (i) a charge representing the amount of thedeficiency between the amount indicated as paid and the amount ofpostage required for the level of delivery service requested and (ii) asurcharge exacted for the deficiency.
 7. The method of claim 1 whereinthe method further comprises providing a sortation protocol including aset of revenue-protection rules indicative of how a mail piececorresponding to a resolved data set is to be sorted by automatedsorting machinery based at least partially on a comparison between theamount of postage actually paid as indicated by the resolved data setand the amount of postage required for delivery of the mail piece inaccordance with the service-type requested, and wherein the sortationprotocol indicates at least one of (i) sorting the mail piececorresponding to the resolved data set for delivery as requested if oneof (a) the resolved data set indicates that no postage has been paid,but the identity of the sender is ascertainable for purposes of one ofautomated and manual charge assessment by at least one of (i) a postalmeter number, (ii) a postal customer account number and (iii) a returnaddress indicated on the mail piece; and (b) the comparison between theresolved data set and the international-mail-services postage datadetermines one of i. postage in an amount equal to at least the raterequired for the service requested in association with the correspondingmail piece has been paid; ii. postage in an amount less than thatrequired for the service requested has been paid, but the identity ofthe sender is ascertainable for purposes of one of automated and manualcharge assessment by the presence, within the resolved data set, of dataindicative of at least one of (i) a postal meter number, (ii) a postalcustomer account number and (iii) a return address exhibited on the mailpiece; iii. postage in an amount less than that required for the servicerequested has been paid and, irrespective of whether the identity of thesender is ascertainable, the amount of the deficiency in payment is lessthan a predetermined deficiency threshold; (ii) sorting the mail piecefor delivery in accordance with a service level representing adowngraded service level relative to the service level requested and forwhich it is determined, by the comparison of the resolved data set tothe international-mail-services postage data, that postage in an amountsufficient for such downgraded delivery service has been paid; and (iii)sorting the mail piece for return to the sender if the comparisonbetween the resolved data set and the international-mail-servicespostage data determines that (a) any postage indicated as paid isinsufficient to further process the mail piece in accordance with thelevel of delivery service requested, and (b) a return address isindicated on the mail piece.
 8. The method of claim 7 furthercomprising, relative to a mail piece for which it is determined that anypostage paid is insufficient for the service level requested, one of (i)automatically and (ii) manually assessing a postal charge to a senderwhose identity is ascertainable through one of data contained in theresolved data set and visual examination of the mail piece, the assessedpostal charge including at least one of (a) a charge representing theamount of the deficiency between the amount indicated as paid and theamount of postage required for the level of delivery service requestedand (b) a surcharge exacted for the deficiency.
 9. The method of claim 8wherein the method further comprises associating data indicative of atleast one of the mail-piece weight and the mail-piece dimensions withthe resolved data set associated with the mail piece, and wherein (a)mail-piece-weight data is rendered by at least one of (i) manual dataentry by a postal employee, (ii) the output of a mail-piece scale, (iii)and an indication exhibited on the mail piece and having resolved imagedata corresponding thereto; and (b) mail-piece-dimension data isrendered by at least one of (i) manual data entry by a postal employee,(ii) the output of mail-piece-dimension sensing apparatus, (iii) and anindication exhibited on the mail piece and having resolved image datacorresponding thereto.
 10. The method of claim 7 wherein the methodfurther comprises associating data indicative of at least one of themail-piece weight and the mail-piece dimensions with the resolved dataset associated with the mail piece, and wherein (a) mail-piece-weightdata is rendered by at least one of (i) manual data entry by a postalemployee, (ii) the output of a mail-piece scale, (iii) and an indicationexhibited on the mail piece and having resolved image data correspondingthereto; and (b) mail-piece-dimension data is rendered by at least oneof (i) manual data entry by a postal employee, (ii) the output ofmail-piece-dimension sensing apparatus, (iii) and an indicationexhibited on the mail piece and having resolved image data correspondingthereto.
 11. A method of identifying and sorting, within a postalsystem, an international mail piece exhibiting at least a destinationaddress field in accordance with a predetermined set of criteriaincluding whether any postage paid by the sender meets a predeterminedadequacy threshold, the method comprising the steps of: capturing atleast one image from a surface of the mail piece and storing the atleast one image in computer memory, the at least one image including atleast a destination address field image corresponding to the destinationaddress field on the mail piece; maintaining international-mail-servicespostage data relating required postage rates to data indicative of atleast one predetermined mail-piece characteristic selected from a set ofmail-piece characteristics including (i) international destination, (ii)mail-piece type, (iii) mail-piece weight, (iv) mail-piece dimensions and(v) service-type requested; resolving the at least one captured imageassociated with the mail piece to produce a resolved data set indicativeof at least one of (i) the identity of any international destinationindicated in the destination address field, (ii) whether any postageamount was paid, (iii) the amount of any postage paid, (iv) themail-piece type and (v) the service-type requested; providing asortation protocol including a set of revenue-protection rulesindicative of how a mail piece corresponding to a resolved data set isto be sorted by automated sorting machinery based at least partially ona comparison between the amount of postage actually paid as indicated bythe resolved data set and the amount of postage required for delivery ofthe mail piece in accordance with the service-type requested; consultingthe international-mail-services postage data and comparing the resolveddata set to the international-mail-services postage data in accordancewith the sortation protocol in order to determine how the mail piece isto be sorted; causing the generation of a sortation signal set inaccordance with at least one revenue-protection rule within thesortation protocol; and rendering accessible to predetermined,signal-responsive sortation apparatus the generated sortation signalset.
 12. The method of claim 11 wherein the sortation protocol indicatesat least one of (i) sorting the mail piece corresponding to the resolveddata set for delivery as requested if one of a. the resolved data setindicates that no postage has been paid, but the identity of the senderis ascertainable for purposes of one of automated and manual chargeassessment by at least one of (i) a postal meter number, (ii) a postalcustomer account number and (iii) a return address indicated on the mailpiece; and b. the comparison between the resolved data set and theinternational-mail-services postage data determines one of i. postage inan amount equal to at least the rate required for the service requestedin association with the corresponding mail piece has been paid; ii.postage in an amount less than that required for the service requestedhas been paid, but the identity of the sender is ascertainable forpurposes of one of automated and manual charge assessment by thepresence, within the resolved data set, of data indicative of at leastone of (i) a postal meter number, (ii) a postal customer account numberand (iii) a return address exhibited on the mail piece; iii. postage inan amount less than that required for the service requested has beenpaid and, irrespective of whether the identity of the sender isascertainable, the amount of the deficiency in payment is less than apredetermined deficiency threshold; (ii) sorting the mail piece fordelivery in accordance with a service level representing a downgradedservice level relative to the service level requested and for which itis determined, by the comparison of the resolved data set to theinternational-mail-services postage data, that postage in an amountsufficient for such downgraded delivery service has been paid; and (iii)sorting the mail piece for return to the sender if the comparisonbetween the resolved data set and the international-mail-servicespostage data determines that a. any postage indicated as paid isinsufficient to further process the mail piece in accordance with thelevel of delivery service requested, and b. a return address isindicated on the mail piece.
 13. The method of claim 12 furthercomprising, relative to a mail piece for which it is determined that anypostage paid is insufficient for the service level requested, one of (i)automatically and (ii) manually assessing a postal charge to a senderwhose identity is ascertainable through one of data contained in theresolved data set and visual examination of the mail piece, the assessedpostal charge including at least one of (a) a charge representing theamount of the deficiency between the amount indicated as paid and theamount of postage required for the level of delivery service requestedand (b) a surcharge exacted for the deficiency.
 14. The method of claim13 wherein the method further comprises associating data indicative ofat least one of the mail-piece weight and the mail-piece dimensions withthe resolved data set associated with the mail piece, and wherein (a)mail-piece-weight data is rendered by at least one of (i) manual dataentry by a postal employee, (ii) the output of a mail-piece scale, (iii)and an indication exhibited on the mail piece and having resolved imagedata corresponding thereto; and (b) mail-piece-dimension data isrendered by at least one of (i) manual data entry by a postal employee,(ii) the output of mail-piece-dimension sensing apparatus, (iii) and anindication exhibited on the mail piece and having resolved image datacorresponding thereto.
 15. A method of sorting, in accordance with apredetermined set of criteria, an international mail piece exhibiting atleast a destination address field and an indication as to a service-typerequested, the method comprising the steps of: capturing at least oneimage from a surface of the mail piece and storing the at least oneimage in computer memory, the at least one image including at least adestination address field image corresponding to the destination addressfield on the mail piece; maintaining international-mail-services postagedata relating required postage rates to data indicative of at least onepredetermined mail-piece characteristic selected from a set ofmail-piece characteristics including (i) international destination, (ii)mail-piece type, (iii) mail-piece weight, (iv) mail-piece dimensions and(v) service-type requested; resolving the at least one captured imageassociated with the mail piece to produce a resolved data set associatedwith the mail piece and indicative of at least one of (i) the identityof any international destination indicated in the destination addressfield, (ii) whether any postage amount was paid, (iii) the amount of anypostage paid, (iv) the mail-piece type and (v) the service-typerequested; consulting the international-mail-services postage data andcomparing the resolved data set to the international-mail-servicespostage data; rendering a determination, based on the comparison betweenthe resolved data set associated with the mail piece and theinternational-mail-services postage data, as to whether any postageindicated as paid by data within the resolved data set is sufficient tofurther process the mail piece in accordance with the service-typerequested; and providing a sortation protocol including a set ofrevenue-protection rules indicative of how a mail piece corresponding toa resolved data set is to be sorted by automated sorting machinery basedat least partially on a comparison between the amount of postageactually paid as indicated by the resolved data set and the amount ofpostage required for delivery of the mail piece in accordance with theservice-type requested, and wherein the sortation protocol indicates atleast one of (i) sorting the mail piece corresponding to the resolveddata set for delivery as requested if one of (a) the resolved data setindicates that no postage has been paid, but the identity of the senderis ascertainable for purposes of one of automated and manual chargeassessment by at least one of (i) a postal meter number, (ii) a postalcustomer account number and (iii) a return address indicated on the mailpiece; and (b) the comparison between the resolved data set and theinternational-mail-services postage data determines one of i. postage inan amount equal to at least the rate required for the service requestedin association with the corresponding mail piece has been paid; ii.postage in an amount less than that required for the service requestedhas been paid, but the identity of the sender is ascertainable forpurposes of one of automated and manual charge assessment by thepresence, within the resolved data set, of data indicative of at leastone of (i) a postal meter number, (ii) a postal customer account numberand (iii) a return address exhibited on the mail piece; iii. postage inan amount less than that required for the service requested has beenpaid and, irrespective of whether the identity of the sender isascertainable, the amount of the deficiency in payment is less than apredetermined deficiency threshold; (ii) sorting the mail piece fordelivery in accordance with a service level representing a downgradedservice level relative to the service level requested and for which itis determined, by the comparison of the resolved data set to theinternational-mail-services postage data, that postage in an amountsufficient for such downgraded delivery service has been paid; and (iii)sorting the mail piece for return to the sender if the comparisonbetween the resolved data set and the international-mail-servicespostage data determines that (a) any postage indicated as paid isinsufficient to further process the mail piece in accordance with thelevel of delivery service requested, and (b) a return address isindicated on the mail piece.
 16. The method of claim 15 wherein themethod further comprises associating data indicative of at least one ofthe mail-piece weight and the mail-piece dimensions with the resolveddata set associated with the mail piece, and wherein (a)mail-piece-weight data is rendered by at least one of (i) manual dataentry by a postal employee, (ii) the output of a mail-piece scale, (iii)and an indication exhibited on the mail piece and having resolved imagedata corresponding thereto; and (b) mail-piece-dimension data isrendered by at least one of (i) manual data entry by a postal employee,(ii) the output of mail-piece-dimension sensing apparatus, (iii) and anindication exhibited on the mail piece and having resolved image datacorresponding thereto.
 17. The method of claim 16 further comprising thesteps of: maintaining postal-customer account data uniquely relating theidentity of each postal customer of a selected set of postal customerswith data indicative of at least one of (i) a mailing address, (ii) apostal services account number, and (iii) a postal meter number; as to amail piece relative to which it is determined, based on the comparisonbetween the resolved data set associated with the mail piece and theinternational-mail-services postage data, that any postage indicated aspaid is insufficient to further process the mail piece in accordancewith the level of delivery service requested, consulting thepostal-customer account data and comparing the resolved data setassociated with the mail piece to the postal-customer-account data inorder to determine, through cross-referencing, whether one of a uniquepostal customer account and a unique postal meter account isidentifiable for purposes of automated charge assessment; and if one ofa unique postal customer account and a unique postal meter account isidentified, automatically assessing a postal charge to the identifiedaccount.
 18. The method of claim 17 further comprising: causing thegeneration of a sortation signal set in accordance with at least onerevenue-protection rule within the sortation protocol; and renderingaccessible to predetermined, signal-responsive automated sortationapparatus the generated sortation signal set.
 19. The method of claim 16further comprising: causing the generation of a sortation signal set inaccordance with at least one revenue-protection rule within thesortation protocol; and rendering accessible to predetermined,signal-responsive automated sortation apparatus the generated sortationsignal set.